The 1886 AAA Championships was an outdoor track and field competition organised by the Amateur Athletic Association (AAA), held on Saturday 3 July at Stamford Bridge, London, England. Competitions took place in magnificent, almost tropical, weather, that was, if anything, too hot for athletes in the longer events. The attendance was lower than on previous occasions with not more than two thousand spectators inside the ground when competition commenced at three o'clock in the afternoon. The band of the 4th Middlesex Regiment entertained spectators between events and the prizes were presented by Mrs Montague Shearman, wife of the President of the AAAs and the 440 yards champion in 1880.